Aftertreatment Explained
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Joined: Aug 2005
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From: quebec,canada
on the 6.7 you have two canister..does the first is the DPF or the second?? i was thinking that the firts were the DPF and the second was the cat? but does there is a cat on the 6.7?? some say that it is a DOC "diesel oxydation catalyst"
somebody know?? would be pleased to know.....
somebody know?? would be pleased to know.....
Registered User
Joined: Jun 2003
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Registered User
Joined: Jun 2003
Posts: 3,741
Likes: 0
on the 6.7 you have two canister..does the first is the DPF or the second?? i was thinking that the firts were the DPF and the second was the cat? but does there is a cat on the 6.7?? some say that it is a DOC "diesel oxydation catalyst"
somebody know?? would be pleased to know.....
somebody know?? would be pleased to know.....
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Joined: Feb 2004
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on the pickup you have DOC, NAC (nox absorber catalyst), dpf, then muffler.
To answer the other question:
No matter how hard you drive it, the dpf will actively regen based upon a timer in the ECM. The timer is base upon fuel burn. You will actually get more regens the harder you drive it (more fuel burn = faster timer).
The mis information in the original article is that the C/C and pickup engines will not regen at idle. If you are driving and come to a stop sigh or light, it will continue to regen until you put it in park, accelerate again, or sit there too long.
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Joined: Feb 2007
Posts: 44
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From: Surrey, BC
This is only true on the cab chassis.
on the pickup you have DOC, NAC (nox absorber catalyst), dpf, then muffler.
To answer the other question:
No matter how hard you drive it, the dpf will actively regen based upon a timer in the ECM. The timer is base upon fuel burn. You will actually get more regens the harder you drive it (more fuel burn = faster timer).
The mis information in the original article is that the C/C and pickup engines will not regen at idle. If you are driving and come to a stop sigh or light, it will continue to regen until you put it in park, accelerate again, or sit there too long.
on the pickup you have DOC, NAC (nox absorber catalyst), dpf, then muffler.
To answer the other question:
No matter how hard you drive it, the dpf will actively regen based upon a timer in the ECM. The timer is base upon fuel burn. You will actually get more regens the harder you drive it (more fuel burn = faster timer).
The mis information in the original article is that the C/C and pickup engines will not regen at idle. If you are driving and come to a stop sigh or light, it will continue to regen until you put it in park, accelerate again, or sit there too long.
your 6.7L will not regen at idle.
(and apparently the 6.4 will not anymore after you get the reflash).
Which is it, regen or no regen at idle?
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Joined: Aug 2005
Posts: 63
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From: quebec,canada
Registered User
Joined: Jan 2005
Posts: 392
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From: South Texas
This is only true on the cab chassis.
on the pickup you have DOC, NAC (nox absorber catalyst), dpf, then muffler.
To answer the other question:
No matter how hard you drive it, the dpf will actively regen based upon a timer in the ECM. The timer is base upon fuel burn. You will actually get more regens the harder you drive it (more fuel burn = faster timer).
The mis information in the original article is that the C/C and pickup engines will not regen at idle. If you are driving and come to a stop sigh or light, it will continue to regen until you put it in park, accelerate again, or sit there too long.
on the pickup you have DOC, NAC (nox absorber catalyst), dpf, then muffler.
To answer the other question:
No matter how hard you drive it, the dpf will actively regen based upon a timer in the ECM. The timer is base upon fuel burn. You will actually get more regens the harder you drive it (more fuel burn = faster timer).
The mis information in the original article is that the C/C and pickup engines will not regen at idle. If you are driving and come to a stop sigh or light, it will continue to regen until you put it in park, accelerate again, or sit there too long.
What they said, and ... there ain't no sparkplug
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Joined: Mar 2004
Posts: 847
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From: Fair Oaks CA
We were talking about the ACERT Caterpillar C-15 engine , it has a spark plug and flame can for the aftertreatment. you cant even see the engine with all the plumbing they have on it , the SRT for changing the waterpump is like 8 hours to do a changeover.
Cummins aftertreatment does not use a FLAME or COMBUSTION anywhere for the aftertreatment
Cummins aftertreatment does not use a FLAME or COMBUSTION anywhere for the aftertreatment
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Dec 17, 2003 06:16 AM
